Method of multiple use of plastic film

Method of multiple use of plastic film

Mulching crops with plastic film can promote earlier maturity, increase yield, and improve product quality. However, in actual farming practices, most mulch films are discarded due to improper handling. To enhance the reuse rate of plastic films and reduce production costs, it is recommended to use them multiple times. The following are some effective methods: One common approach is to cover winter wheat with a new layer of film at the end of winter. By mid-March of the following year, when it's time to mulch again, the film is removed in early April and then used to cover watermelons. This method allows for efficient reuse of the same plastic sheet. Another technique involves using the same film for multiple crops. For example, from late November to mid-March, the film is used to cover wheat. After that, spring vegetables are planted, and the film is removed about 10 days later. In early April, summer vegetables are covered, and some areas may still be used for autumn crops. As long as the plastic is carefully removed, it can typically be reused up to four times. Several crop rotation patterns have been developed to maximize the use of mulch films. These include: 1. Winter wheat – cabbage – cucumber (or tomato) 2. Winter wheat – bamboo shoots – tomatoes (or cucumber) 3. Winter wheat – cumin – sweet pepper 4. Winter wheat – radish – cabbage – cowpea 5. Winter garlic – water radish – cowpea – tomato 6. Winter spinach – water radish – fennel – tomato Fast-growing vegetables like radishes and fennel can be interchanged, and fruiting crops such as melons and tomatoes can also be rotated based on seasonal needs. Additionally, farmers can use the same film for different crops without replacing it entirely. For instance, after planting cabbage, they can later plant sweet peppers. In the fall, they might grow bamboo shoots or beans, and in the autumn, they can cover cucumbers. Another strategy is to first lay the film and then build a small arch shed over it. After removing the film, it can be reused to construct a small greenhouse for growing cowpeas or other vegetables. This method can also be applied in greenhouses, where the film is peeled off and then used again for tomatoes or other crops. By adopting these multi-use strategies, farmers can significantly extend the lifespan of their plastic films, reduce waste, and lower overall input costs. With careful management, the same mulch film can support several growing cycles, making it a more sustainable and cost-effective choice.

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